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Compound (B) is:...


Compound `(B)` is:

A

Phenylhydrazone of (A)

B

Osazone (A)

C

Both

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
Compound `(A)` has no `(C-OH)` group `alpha` to the `(CH=O )` group. So it forms only phenylhydrazone with `1 mol` of `PhNHNH_(2)`.

(ii). Compound `(B)` has `(C-OH)` group `alpha` to the `(CH=O)` group. So it forms only osazone by reacting with `3 mol PhNHNH_(2)`.
`:. 3 mol PhNHNH_(2)` reacts with `1 mol (C )`. `1 mol PhNHNH_(2)` reacts with `(1)/(3)mol (C )`.
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